On 10/30/2020 10:10 AM, MediaStream wrote:
Attempting to build *static* FFmpeg 4.3.1 on AWS EC2 Amazon-Linux 2
*ERROR: x265 not found using pkg-config*
*Please advise on a proper course of action*
Install x265? (is it already installed using another method?)
On 10/29/2020 12:02 PM, Reindl Harald wrote:
* everybody is born to read "ERROR" at the end of configure
Un, no they're not, nor to understand what it means and *whether* it's relevant.
* everybody is born to realize that "Try again from the top, git clone a
fresh working copy" is idiotic -
On 10/29/2020 1:50 AM, USMAN AAMER wrote:
How can I resolve the issue?
Start by posting the entire command output that fails. (and remember not to
top-post on this list)
ffmpeg-user mailing list
On 10/28/2020 3:37 PM, Reindl Harald wrote:
which shell don't respect PATH?
either make your binary available in PATH or type the fucking full qualified
path to it
Such polite language (and really, NOBODY has such expansive knowledge
and experience as you do, and it's
On 10/28/2020 2:02 PM, Reindl Harald wrote:
learn about https://en.wikipedia.org/wiki/PATH_(variable) or type your f**g
path full qualified - basics not related to ffmpeg
Or first ask if the OP is using a c-shell derivative where "rehash" is the
correct command to make new ones accessible
On 10/26/2020 4:22 PM, juan carlos rebate wrote:
It is not my intention to do top posting, this is because I do not like to use
mail apps, I like the graphical interface web, and this does not have options
to avoid it
Yes it does, I do that all the time, both in the android app and in a
On 10/25/2020 10:40 PM, Marc Barrett wrote:
I am ripping the DVDs (and Blu-Rays) in exactly the same way: with MakeMKV,
to MKV containers. As the name suggests, MakeMKV rips to MKV containers.
MakeMKV is a GUI utility, so there is no output that I can post.
But there _is_ output from ffmpeg,
On 10/25/2020 10:14 PM, Juan carlos Rebate wrote:
However if you compile two separate versions
there would be no licensing issue if you share it, would it?
If you "share" the build, then technically you're distributing it. The one
that's GPL only is perfectly fine to share (following the
On 10/25/2020 9:16 PM, Juan carlos Rebate wrote:
my question is derived from the license problem that does not allow
gpl codecs together with non-free codecs
I may be mistaken, but as I understand the GPL, if you're not distributing
anything (building for your own use), there are no license
On 10/25/2020 3:24 PM, Ted Park wrote:
I wonder if the BD/DVD ripping software you are using can be made to
transcode so you wouldn’t have to do this.
And I also wonder if the rip is _upscaling_ the dvd to 1080 instead of
leaving it at SD resolution since about the longest dvd movie will be
On 10/20/2020 6:52 AM, Edward Park wrote:
You say it’s not very efficient using your video editor (I assume
something along the lines of Avid, PPro, FCPX/Motion), but I don’t think
FFmpeg is the right tool for the job, unless you had some really complex
ass subtitles already, using a bunch of
On 10/20/2020 10:33 AM, Cecil Westerhof wrote:
What could be happening here?
Please post some more info, at the least the complete command and the output
of the last invocation in by the script.
ffmpeg-user mailing list
On 10/18/2020 11:25 AM, Juan carlos Rebate wrote:
I have already solved the problem, for those who want to solve...
(a) do not top post on this mailing list
El dom., 18 oct. 2020 a las 20:12, Carl Zwanzig () escribió:
(b) DO NOT REPOST offlist messages! That's incredibly rude
On 10/16/2020 11:54 PM, Mark Filipak (ffmpeg) wrote:
On 10/16/2020 10:14 PM, Carl Zwanzig wrote:
You're absolutely right, Carl.
BTW, I go by "z" (how I sign my email).
There are a fair number of mpeg-ts parsers already out there in a variety
of languages ...
Really? Do you me
On 10/15/2020 1:44 AM, Mark Filipak (ffmpeg) wrote:
Got any suggestions how I should proceed?
I hate to say this, but you're rather reinventing the wheel (and building it
out of toothpicks).
There are a fair number of mpeg-ts parsers already out there in a variety of
languages, and the
On 10/16/2020 6:18 PM, Ivan Gorin wrote:
Yes, I've tried both of them, used different values from 1 million and
higher, no change. Was doing something like ffmpeg -probesize 10
-analyzeduration 10.Still sees only the video stream. Maybe I'm not
using them correctly, can you give
On 10/16/2020 12:41 PM, Ivan Gorin wrote:
[avi @ 0x558097763700] New audio stream 0:1 at pos:18113032 and DTS:0s
[avi @ 0x558097763700] New audio stream 0:2 at pos:18113032 and DTS:0s
Have you tried using -analyzedurarion and -probesize with relative large
values to find the streams? See the
On 9/30/2020 1:43 PM, Tim McClure wrote:
When I stream ffmpeg SRT to Wowza without encryption it works however when I
stream SRT encrypted I get the error listed below. I can use other software
to stream encrypted SRT to Wowza and it works so I think the issue is on the
ffmpeg side. Here is
lacking knowledge, information, or awareness about a particular thing.
On 9/29/2020 1:40 PM, Paul B Mahol wrote:
It is cryptic only for ignorant folks.
Gee, maybe that's why they're asking questions- to gain a "knowledge,
information, or awareness about a
On 9/29/2020 12:43 PM, Paul B Mahol wrote:
On Tue, Sep 29, 2020 at 10:26:20AM -0400, Mark Filipak (ffmpeg) wrote:
And thanks for that. So, ffmpeg really is a Tower of Babel, eh? That does
not seem wise to me. That seems like a great way to generate bugs in
addition to confusion.
Now if that
On 9/27/2020 10:44 AM, Schampignon Cristobal via ffmpeg-user wrote:
[mxf @ 018fbf7f9000] could not resolve source track sequence strong ref
[mxf @ 018fbf7f9000] broken or empty index
[mxf @ 018fbf7f9000] error getting stream index 4294967295
[mxf @ 018fbf7f9000] Could not find
On 9/27/2020 5:27 PM, James Darnley wrote:
Please do not top post.
And the formatting makes the ffprobe output difficult to read. If you (the
OP) is posting in HTML, turn that off and stick to plain text.
If I understand the question-
On 9/24/2020 6:29 AM, Firas Shahin via ffmpeg-user wrote:
But this tells me that it must be the software versions, since you didn’t have
Always try with the current ffmpeg (and please do not top-post replies).
On 9/24/2020 12:41 AM, Mar Andrés López wrote:
When I process my video with ffmpeg and I set the format to mpegts, ¿why
It changes the duration of my video from 00:00:04.56 to 00:00:04.00?
Please include the complete command line and output when asking a question.
If you're not using a really
Please limit the use of "!"...
On 9/23/2020 3:19 PM, Firas Shahin via ffmpeg-user wrote:
ffplay version 3.2.15-0+deb9u1 Copyright (c) 2003-2020 the FFmpeg developers built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
That's quite an old version, you'll need to try with an
On 9/22/2020 8:42 AM, Carl Zwanzig wrote:
(which some of the things I was recalling, too)
sigh, I shouldn't post before the coffee takes hold.
ffmpeg-user mailing list
On 9/22/2020 8:29 AM, Edward Park wrote:
I might be making up the history behind it, but 44.1kHz was basically
just workable, with 20kHz assumed to be the “bandwidth” limit of sound
intended for people to hear, 40kHz would be needed to encode sound
signals that dense, and the extra 4.1kHz would
On 9/17/2020 7:28 PM, amin...@mailbox.org wrote:
Can you explain this? I'm trying to get (30/1.001) or the rounded 29.97 to
divide 48k cleanly or be a clean ratio but I don't see it.
It doesn't, but 48k samples per second is a nice number (and does divide
nicely by 24,25, and 30). 3/1001
On 9/14/2020 4:57 AM, Michael Koch wrote:
On 14-09-2020 04:54 pm, Gyan Doshi wrote: >> Each filter presents a list of
input formats they can work with and a list
of output formats they can directly generate. [...]
Thanks for good explanation!
Yes, that makes sense. Could that be included
On 9/13/2020 11:47 PM, Edward Park wrote:
Okay, so the file displays 25:47 in Media Player and plays... how long?
Yep, and I also asked that almost two weeks ago.
The only sure ways to know the actual Total Running Time (TRT) are either to
render it in real time or to count the
On 9/10/2020 1:28 AM, Simon Brown wrote:
Equally, if I
run myTestOnDemandRTSPServer from a file then it can play it without
issue. It seems to be the combination of the two that causes the problem.
Are you sure that the server is actually reading from the pipe? That is-
cat myfile |
On 9/8/2020 6:07 AM, Bohdan Fihar wrote:
I can't rely on "aws s3 cp", since it can be not installed on a machine
where I will run ffmpeg.
A couple of things-
Isn't or can not be?
Please just post the error text, not an image of it (actually, you ought to
be posting the complete/unedited
On 9/7/2020 1:51 AM, Michael Koch wrote:
Again spreading misinformation, this needs to stop.
I kindly ask people who do not want good to this project,
to just unsubsribe from the list.
What's wrong in my answer?
If something _is_ "misinformation" then correct it! Simply saying
On 9/6/2020 12:33 PM, Carl Eugen Hoyos wrote:
Or in other words: We will certainly not change our definition of
"interlaced video" - many people seem to understand it.
Sounds rather strong ("certainly not"), but those of us coming from the NTSC
analog world all understood the concept of
On 9/3/2020 1:49 PM, Mark Filipak wrote:
I'm not sure but I think building ffmpeg is pretty time-consuming. If I
obtain help figuring out how to do it -- dependencies have defeated me -- I
can do Linux makes, perhaps on alternate days. If others do the same, the
task can become distributed and
On 9/2/2020 11:31 AM, Carl Eugen Hoyos wrote:
Am Mi., 2. Sept. 2020 um 20:29 Uhr schrieb Michael Koch
"ffmpeg.zeranoe.com will close on Sep 18, 2020, and all builds will be
Any idea where we can get builds for Windows after this date?
The FFmpeg project only provides source
On 9/1/2020 1:21 AM, myounggun jang wrote:
The duration of the original wav is 1:09:30, but the length of the
converted MP3 is 1:07:16.
Are those durations from actually playing the file? It's not uncommon for
the container's metadata to be wrong and it sounds as if that's what's wrong
On 8/27/2020 1:52 PM, Simon Roberts wrote:
I have a little device that takes "old" composite video and sends it out to
USB. It's recognized by video4linux2 and I can watch the VHS tapes that I'm
trying to capture using xawtv simply using:
v4lctl -c /dev/video2 setnorm NTSC
v4lctl -c /dev/video2
On 8/27/2020 9:35 AM, James Sundquist wrote:
I'd like to make a series of input seeking based outputs from the same
source video. Ideally each will be taken from a text file called
edits.txt. Otherwise every single new output means defining:
Start point + Duration (or End Point) + name of new
On 8/23/2020 12:30 PM, Mark Filipak wrote:
Developer preparation: Kindly add comments to the source code. The comments
don't need to teach or explain. They just need to repeat the code's logic,
but in English instead of Martian.
I think we'll have to disagree on that, most of the basic logic
I'm fairly sure that someone will object to a point below. Go ahead, but
also suggest something better; if you can't think of an improvement, maybe
it's better not to say anything. (And if something is not correct, tell us
what is; just saying "Wrong!!" is not helpful.)
On 8/22/2020 2:03 AM, Nicolas George wrote:
There is no duplication, only multiple outputs. Would you also remove
the man pages because they are "duplicate" of the HTML pages?
Multiple outputs is not duplicative? If the same info in the same format is
in two places, that rather sounds like
On 8/21/2020 3:33 AM, Michael Koch wrote:
I never found that "General Documentation" file because I thought
"ffmpeg-all" contains what the filename implies: All. This is obviously not
the case. The filename is misleading, if the file doesn't contain all
documentation. Wouldn't it be better to
On 8/21/2020 10:59 AM, Paul B Mahol wrote:
I think git usage is far less complicated than ffmpeg.
Also git should be better documented too.
Both of those are true :), but still can be mystifying.
For those on windoze, there are git GUIs available that take some of the
pain out; I generally
On 8/19/2020 5:22 AM, Moritz Barsnick wrote:
Perhaps the original poster meant "broadcast" in the sense of
I suspect that's the case- not broadcast in the networking sense.
ffmpeg-user mailing list
On 8/17/2020 1:53 AM, Phil Rhodes via ffmpeg-user wrote:
People, be polite. Harald, you are incredibly impolite. This is a user
list. It is reasonable for people to ask basic questions here. Your
assumption that everyone is an expert is unreasonable.
Exactly. And many people will readily say
Reindl is known for acerbic and unhelpful answers, AFAICT most readers
On 8/16/2020 10:02 AM, Cecil Westerhof wrote:
For the moment I will keep with 264. Especially because these files
are only played once. Just wanted to make sure I was not overlooking
On 8/15/2020 3:14 AM, Cecil Westerhof wrote:
I understood that there are different ways to record Zoom meetings. (I
am not doing it myself, I only get the results.) I found that what I
got was extremely small. (A video of six minutes only took 56.7 MB.)
What would be the best way to record Zoom
On 8/13/2020 12:28 PM, Brad Bruggemann wrote:
ffmpeg version 589de66a0b Copyright (c) 2000-2018 the FFmpeg developers
Always the first question- have you tried an up-to-date build of ffmpeg? If
not, please do.
On 8/12/2020 9:13 AM, Randy Johnson via ffmpeg-user wrote:
What does "op-post" mean? I am not familiar with that term.
ffmpeg-user mailing list
please do not op-post on this list
On 8/12/2020 6:58 AM, Randy Johnson via ffmpeg-user wrote:
I did a ton of reading yesterday but cannot figure out how to expand this
to more than 2 videos. I am getting hung up on how to read the
There are several examples of multi-picture
On 8/12/2020 4:52 AM, Aleksid wrote:
They can be loaded only if I use --prefix=/usr/local/Cellar/ffmpeg and then
put dylibs into /usr/local/Cellar/ffmpeg/libs folder.
Then do that, it's what --prefix is for.
I understand that it is correct in a world of Unix systems. But I would
Please read the mailing list FAQ which instructs people not to top-post.
On 8/5/2020 1:45 PM, Don Fotheringham wrote:
Is there no procedure that allows for some path to an agreement of user
fees or whatever?
There is not; the GPL and LGPL don't need one, follow the compliance
On 8/5/2020 1:26 PM, Don Fotheringham wrote:
We have developed software that requires the distribution of FFmpeg
(included in the download). Our intention is to sell the software.
Who do I contact to inquire further about how to proceed regarding
permission, royalties, fees etc.?
On 8/5/2020 12:23 PM, jroch via ffmpeg-user wrote:
I figured out i was not setting pixel format.
And I should have noticed that- BMD boards are famously finicky about the
About top post, sorry for that, i don't even think i know what this is
On 8/5/2020 9:52 AM, Tom Burrows via ffmpeg-user wrote:
I need to get the duration of any video file such that when multiplied
with the media's fps value (in this case, either ’tbr’ or ‘fps'), it
equals the number of frames in the video.
That works until you find a variable frame-rate video. I
On 8/5/2020 10:10 AM, jroch via ffmpeg-user wrote:
Any ideas on how to troubleshoot this ?
First- post the complete command output.
Second- check to see that your system has enough resources (cpu/mem/etc), in
general, to make this work. (Try using the BMD MediaExpress program to capture.)
On 7/28/2020 2:17 PM, Kawada Tsuyoshi wrote:
I executed same command on Ubuntu 20.04 again.
I got good quality video.
Note that the linux disrto version doesn't matter at all, only the ffmpeg
And please do not "top-post" on this mailing list.
On 7/27/2020 5:26 PM, Kawada Tsuyoshi wrote:
$ ffmpeg -r 30 -i %03d.jpg -vcodec libx264 -pix_fmt yuv420p -r 30 out.mp4
Please post the complete & unedited command output, that will tell us a lot
about what you're doing.
On 7/22/2020 1:53 PM, Jake McGaker wrote:
and when I get to the
step after I edit the environmental variables and I type in the cmd prompt,
I get an error saying ffmpeg didn't install.
Almost no one here is going to watch the video, please just explain what's
going on and include the command
On 7/22/2020 6:22 AM, Rodolfo Medina wrote:
Same problem also with simply:
$ ffmpeg -f alsa -i hw:1,0 -f video4linux2 -i /dev/video0 out.mpg
, and audio completely out of sync...
And complete command output is still missing (it's always helpful)
Since this works--
mencoder tv:// -tv
Please don't top-post on this list
stream browser source (chat, donation alerts, follow alerts etc, like in
What does that mean? Is that a single graphic overlay or something else?
create delayed stream (like in obs) with complex filter?
I think you'll find that in the list archive.
On 7/20/2020 9:57 AM, Simon Roberts wrote:
Splitting this into five separate commands, generating five separate
output files, running them in background simultaneously, works without
any overruns, dropped frames, or any other complaints.
This more suggests either a threading/process management
On 7/19/2020 9:05 AM, Ramon Brea wrote:
Please help. Thanks
Please include the complete command line and all of the output. That will help.
(and as a pre-reminder, do not "top post" on this mailing list)
ffmpeg-user mailing list
On 7/13/2020 8:47 PM, Simon wrote:
So now, assuming my logic is sound, my question would be how can ffmpeg
detect the connected signal is present (it "knows" which channel is "live")
and yet not read the video signal?
Decklink boards are _very_ touchy about formats and parameters. Try setting
On 7/13/2020 10:20 AM, frank rizo wrote:
I’m not that smart with all this, so, how do i find out that
information? with a working video from the same source?
ffprobe will report a lot of info about a video file; I find MediaInfo to be
useful for that, too.
With that, you -may- be able to tell
On 7/13/2020 10:06 AM, Paul B Mahol wrote:
This can be done only if we know which codec where stored in file.
Data recovery is always uncertain, whether from a single file or from a hard
drive- if you can't find some indicator of what's where, it's all just
random data (this is why
On 7/11/2020 1:39 AM, Paul B Mahol wrote:
Can you elaborate what you tried and what failed?
Why does it matter???
Someone has gone to the effort to identify a problem and suggest a solution.
I'd expect that whomever has been maintaining that code would welcome this
and incorporate that
On 7/8/2020 3:24 AM, Verachten Bruno wrote:
On Tue, Jul 7, 2020 at 10:49 PM Carl Eugen Hoyos wrote:
Am Di., 7. Juli 2020 um 21:34 Uhr schrieb Verachten Bruno :
This is apparently not ignored (I thought it should be) and you are
therefore responsible not to set these
On 7/2/2020 6:41 AM, Sam Holder wrote:
Any ideas ... how best to proceed with troubleshooting?
It's _always_ best to include the entire command line and output when asking
for help here, even it there's almost no output.
Have you tried that build on another version of windoze?
On 6/27/2020 8:53 AM, Simon Roberts wrote:
1) create a composite output that has all four of the inputs laid out one
per quadrant, so all can be seen on a single display
Google "ffmpeg multiviewer", you'll find a handful of ideas, including this-
On 6/25/2020 5:50 AM, mikelee164396 wrote:
When I tried to merge, there was an error. See the attachment error.txt for the
error content and command line.
Please place those in the email body. Very few people will download and open
the 7z file. Also, what do the .key and .m3u8 files look
On 6/21/2020 10:23 PM, Arunava Banerjee via ffmpeg-user wrote:
ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018
That version is positively ancient in software terms. First thing is to get
a current version (the -git head version is recommended, but at least a
4.2.3 build), start
On Tue, Jun 16, 2020 at 9:45 AM Yannick Barbeaux
(Strange thing though : "Receive your own posts to the list?" is set
to "Yes" in my subscription settings and I do not receive them).
gmail tends to omit posts that
On 6/15/2020 10:17 AM, Rob Hallam wrote:
Is this still true? In OBS, Settings → Advanced there is a "Stream Delay"
section (mentioned onhttps://obsproject.com/wiki/OBS-Studio-Overview).
The default setting of 20s estimates mem usage of 11MB; I set the option
to 120s which increased the memory
(please do not top-post on this list)
On 15/06/2020, KoreanFanOfficial wrote:
Hello. I want to add delay, chat and alerts to my stream with ffmpeg. How i
can do it?
On 6/15/2020 3:48 AM, Tom Sparks wrote:
Have you looked at OBS?
OBS filters can only add a short delay.
Add delay- how
On 6/13/2020 4:55 AM, 黑雨天 wrote:
I converted the mp4 video clips into key frames, using the above hardware
and commands, the video became very blurred after the conversion. The
video bit rate is very high and should not be the case.
What is the question?
We need to see the complete/unedited
On 6/12/2020 10:59 AM, Moritz Barsnick wrote:
On Fri, Jun 12, 2020 at 16:46:30 +, FFmpeg user discussions wrote:
Requesting you to read the entire email and kindly help me in solving
this. I'm in urgent need of this fix.
And you asked this question a few days ago.
ffmpeg -i Input0.mov
Perhaps I'm missing something, but...
On 6/11/2020 8:27 AM, Chakraborty, Rakesh via ffmpeg-user wrote:
ffmpeg -i Input0.mov -y -fpre ./preset/mp4_Projector.ffpreset -astrict -2
-vsync vfr -acodec copy -vcodec copy -s 1280x720 Output0.mp4
(where's the command output? _always_ post the command
On 6/10/2020 7:24 AM, Paul B Mahol wrote:
On 6/10/20, Nicolas George wrote:
Paul B Mahol (12020-06-10):
How so it is a bug? xfade needs 2 inputs.
concat demuxer gives single output.
A filter that "can not work with" the output of another filter, your
words, is a bug. Filters should all
On 6/9/2020 4:56 PM, Ming Tu wrote:
Updated to newest version but still has errors, different from before
ffmpeg version 4.2.3-statichttps://johnvansickle.com/ffmpeg/ Copyright (c)
2000-2020 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
You cut the command line, don't do that even
On 6/8/2020 3:59 PM, John Van Ostrand wrote:
Instead of using -r 30 try -vf "fps30"
Rate setting can be tricky, with multiple options and filters. Some
searching of the the list archive should give examples of how to do this.
Part of the confusions come with setting input rate vs output
On 5/29/2020 1:39 PM, Mark Filipak wrote:
I want to limit ffprobe to frames zero to 5403. Anyone know how I can do
that? Perhaps an undocumented option?
How about -read_intervals?
ffmpeg-user mailing list
On 5/26/2020 11:36 PM, Edward Park wrote:
I might be wrong but it looks like the example you uploaded is from a
session with at least two files, maybe the other named similarly but
ending with _02 (or maybe it is incomplete and the next part wasn't
saved). I think it is sample buffers
On 5/25/2020 7:33 AM, Francois Visagie wrote:
It isn't clear why you're concerned with intermediate files, but Zoom has
a "compatibility" setting for final output.
When I checked a few days, the only output is still mp4. There is an option
for "Optimize for 3rd party video editor", no idea what
On 5/22/2020 9:33 AM, Kyle Schwarz wrote:
You don't even need the build script though, you could easily
cross-compile with Cygwin as you really only need the
MinGW-64? I've used that build ffmpeg w/ decklink and IIRC it was pretty
much without problems once I had the
Does anyone have experience converting zoom recordings from their
intermediate file(s) to other formats? The zoom application will convert to
mp4 but that becomes difficult if you want to push the conversion to another
system, and you still get mp4, no choice on that.
On 5/20/2020 10:41 AM, Michael Glenn Williams wrote:
ffmpeg version N-79453-g5256250-tessus Copyright (c) 2000-2016 the FFmpeg
Have you tried a more modern version of ffmpeg? That one is positively
_ancient_. If not, please get the -latest- and try that (start at
On 5/17/2020 8:12 AM, Ed Warner via ffmpeg-user wrote:
I’m a new user to FFmpeg and having some issues I can’t find answers to.
Here’s what I’ve done I’m trying to accomplish:
Ed, a couple of standard things-
Please post the complete unedited command output w/ the command line, it
On 5/16/2020 11:05 AM, Carl Eugen Hoyos wrote:
My personal experience, note that nothing above points to using msvc.
Just wanted to know if there some technical reasons I'd overlooked, doesn't
sound like it.
Some other OS projects that incorporate ffmpeg libs do use msvc, such as
On 5/16/2020 10:53 AM, Carl Eugen Hoyos wrote:
Probably unrelated: I strongly suggest to use wsl to compile
FFmpeg for Windows.
Not to disagree, but what forms that preference?
(I use mingw wherever possible and msvc when forced (and from the command
line, if possible). And I'm sure I've
On 5/15/2020 2:00 AM, Moritz Barsnick wrote:
On Fri, May 15, 2020 at 08:28:03 +, FFmpeg user discussions wrote:
Would like to understand, any plan to fix the to the
https://nvd.nist.gov/vuln/detail/CVE-2020-12284 (FFmpeg Vulnerable to
Denial-of-Service (DoS) via Heap-Based Buffer Overflow
ISTR a thread here not that long ago about threading and hardware
acceleration; may want to search that out.
ffmpeg-user mailing list
To unsubscribe, visit link above, or
On 5/14/2020 7:56 AM, Ram Shaffir wrote:
Hmm... any suggestions on how to make it work? A different HW between the
GoPro and the PI that does most of the encoding?
You will need to do some more research on your own. May be that a different
camera, or a different re-coding platform, is needed to
Was the the original capture compressed at all?
Digitizing, especially from VHS, is a challenge. Best is to take the YC
output from the deck, push it through a TBC/proc-amp into the capture
device, and record that with no compression. If a TBC isn't available, at
least don't compress the
On 5/11/2020 2:05 PM, Ram Shaffir wrote:
No, you are not missing anything, I had many many different tests and all were with poor results,
This is still missing the _command_output_, please post that. Are you
testing with the latest build for the r-pi?
Also, do not top-post on this
On 5/11/2020 10:04 AM, Bruce Roberts wrote:
Thanks for getting back to me. I have tested with "ffmpeg version
96de7bf8df Copyright (c) 2000-2017 the FFmpeg developers" which, if not the
latest version, is only a month or two old and the result is exactly the
The copyright date suggests
On 5/11/2020 5:12 AM, Ram Shaffir wrote:
I tried some different ways to capture this. Still, my quality results
are poor, and no audio or the audio is out of sync and video is choppy,
another issue is that when I try to use the hardware acceleration codec
h264_omx I get very low quality
On 5/9/2020 12:21 PM, Marton Balint wrote:
1) The most significant is probably input probing.
I suspect the decklink part is a red herring, playback from a file to the
decklink shoudl have almost no latency, certainly not 3+ seconds (doing a
gdi screen capture to decklink is under 1 second
On 5/7/2020 6:56 PM, Edward Park wrote:
Are the logo png files transparent and same size as the video frame size?
If so you can use the overlay filter with the logo file as second input.
And if not, it's easy enough to resize/reposition and add an alpha channel
if missing. That may be way
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